Electric locomotive.



W.- DALTON. ELECTRIC LOGGMOTIVB, APPLICATION FILED AUG. 19, 1913.

Patented Jan. 13, 1914.

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W. DALTON. ELECTRIC LOCOMOTIVES. APPLICATION TILED AUG. 19, 1913.

1 ,084,3 1 7. Patented Jan. 13, 191 4.

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NdHT W DALTON ELECTRIC LOCOMOTIVES. APPLICATION FILED AUG. 19, 1913.

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- types which WILLIAM DALTON F SGHENECTADY, NEW YORK.

ELECTRIC LOCQMOTIVE.

Specification of Letters Yatent.

Patented Jan. 13, 1914.

Application filed August 1! 1913. Serial No. 785,469.

To all whom it may concern:

Be it known that I, WILLIAM DALTON, of Schenectady, in the county ofSchenectady and State of New York, have invented a certain new anduseful Improvement in Electric Locomotives, of which improvement thefollowing is a specification.

The object of my invention is to neutralize or reduce the destructivelateral vibration to which electric locomotives of the have a low centerof gravity are subject. The vibration referred to is due, primarily, tothe alternate increase and reduction of adhesion between the drivingwheels and the rails when passing over uneven track at high speed, c.0., 1n assing a low spot, as a rail joint, the ad esion is momentarilydecreased, causing that side of the locomotive or truck to loosen itsgrip upon the rail. As the torque is constant, the greater adhesion ofthe driving wheels upon the opposite side of the locomotive or truck(assuming the rail to be normal on that side) tends to slue or swing thelocomotive, or that unit of the locomotive, toward the rail in which thelow spot is located. As joints are usually alternated in the oppositerails, this sluing becomes a vibration like that of a pendulum, firsttoward one rail and then toward the other, which is very severe anddestructive to the track,

- in the case of locomotives with a low center of gravity, as the blowis received directly upon the side of the rail head, without themodifying and softening effect of the action of the carrying springs,which, in locomotives with a high center of gravity, greatly lessens theshock, by allowing the rolling of the entire machine.

In a locomotive of the type herein exem plified, my invention, by theinterposition of friction devices bet-ween the truck frames and the unitframes, or between the unit frames and the cab frame, or both, somodifies and reduces this lateral vibration that it becomes negligible.

The improvement claimed is hereinafter fully'set forth.

In the a 'ccompanying drawings: Figure 1 is a side view, in elevation,of an electric locomotive, illustrating an embodiment of my invention;Fig. 2, a plan view of the same, with the cab removed Fig. 3, a planview, on an enlarged scale, of the friction device, interposed betweenthe truck frame and unit frame; Fig. 4., a view, in elevation, ofthe-same; Fig. 5, a section through one of the springs and the frictionstrips and backing plates, on the line as w of Fig. 3; Fig. 6, a planview of the friction device interposed between the unit frame and thecab frame; Fig. 7, a View, in elevation, of the same, with the frames insection; Fig. 8, a similar view of the fastening to the cab frame; and,Fig. 9, a section through one of the springs and the friction strips,and backing plates, on the line y y of Fig. 7.

My inveni'tion is herein exemplified as applied in an electriclocomotive having an articulated unit frame comprising two unitsections, l, 1, which are articulated at their adjoining ends by acoupling pin, 1*. Each of the unit frame sections is provided, near itsmiddle, with a center plate bearing, 2,

which pivotally supports one end of a cab frame, 3, on which a cab, 3,is mounted, in such manner as to permit free movement of the locomotivearound curves. Each of the unit frame sections is supported on twoswiveling trucks, 4, each of which is carried on two axles, e on whichare fixed pairs of wheels, 4", and which are rotated by motors, 5, inthe ordinary manner.

In the practice of my invention, I provide frictional resistancedevices, indicated, as entireties, by the reference symbols, a, whichare interposed between the two trucks, 4:, of each of the unit framesections, and frictional resistance devices, indicated as entireties, bythe reference symbols, 6, which are interposed between the unit framesand the cab frame. Referring first to Figs. 3 to 5 inclusive thefriction devices, a, which are interposed between the trucks are,preferably, of the following construction. The trucks, 4, of each of theunit frame sections, are connected one to the other by extension bars,8, which are secured to the frames of the outer trucks, and are inclinedinwardly, and secured together, by plates, 8*, and a bar, 8 which isbent into U form and inclined correspondingly with the extension bars. Ajaw, 9, which extends transversely to the locomotive, is bolted to theouter end of the bars, 8*, and

a friction bar, 10, is coupled by a pin, 11,

to each of the jaws, 9, a limited amount of vertical movement of thefriction bar being its permitted by vertically elongating the holetherein througlr which the coupling pin, 11, passes. between frictionstrips, 12, of fiber or other suitable material, which are backed byplates, 13, 14, one of which, 13, is pivotally connected by a pin, 15,to a bracket, 16, secured to the adjoining end of the frame of theadjacent truck, 4. The friction strips to the cab frame,

7 plates, 14,

and backing plates are housed between, and held in proper position by,which are secured, at their ends, to the bracket, 16, and to a similarbracket, 16%, both of which are fixed to the adjacent truck frame, 4. YThe required frictional resistance to longitudinal movement of thefriction bar, 10, between the friction strips, 12, is imposed by bolts,18, which pass through the friction strips and backing plates andthrough follower plates, 19, between which and the-adjacent backinplates,-l4, helical springs, 20, are interpose The springs, 20, arebrought to the required bearing on the backing plate, 14, by nuts, 18',engaging threads on the bolts, 18, and bearing on the outer sides of thefollower plates.

The friction devices, 6, which are interosed between the unit frames andthe cab ame, are of substantiall similar construction to those abovedescribed and are shown in Figs. 6 to 9 inclusive. The friction bars,10' are, in this case, coupled bypins, 21, to link, 22, the oppositeends of which are coupled, by pins, 23, to supports, 24, fixed and slidebetween friction strips, 12, backed by plates, 13, 14*, and supported onbrackets, 17, secured to the unit frame sections, 1. Frictionalresistance to the longitudinal movement of the friction bars is, as inthe construction before described imparted by bolts, 18", which passthrough the friction strips and backing plates, and through followerplates, 19, be tween which and the adjacent backing posed. The springs,20, are brought to the required bearing on the backing plates, 14, bynuts, 18, engaging threads on the bolts, 18 and bearing on the outersides of the fo ower plates.

In the operation of an electric locomotive in which my invention isapplied, the effect of the friction devices which are interposed betweenthe swiveling trucks, and between the unit frames and the cab frame, ashereinbefore described is, by reason of their resistance to the relativemovements of the two members with which they are, respectively,connected, to substantially diminish or neutralize any tendency to rapidor violent vibration, while allowing said members all the range ofmovement which in traversing curves, and in accommodating The bar, 10,is fitted'to slide angle bars, 17, f

helical springs, 20*, are inter-' is necessary themselves to variationsin level and alinement of the'track.

I claim as my invention and desire to secure by Letters Patent:

1. In a locomotive, the combination of a cab frame, a unit frame onwhich said cab frame is supported and which is fitted to swivelrelatively to said cab frame, a plurality of pairs of motor drivenwheels supporting said unit frame, and a frictional resistance mechanisminterposed .between and coupled to the unit frame and cab frame andadapted to oppose sudden horizontal oscillatory movements of the formerrelatively to the latter.

'2. In a locomotive, the combination of a cab frame, an articulatedframe comprising two coupled unit sections on which said cab frame issupported, the unit sections being each fitted to swivel relatively tosaid cab frame, a plurality of pairs of motor driven wheels supportingsaid unit frame sections, and frictional resistance mechanisms, eachinterposed between and coupled to one of the unit frame sections and thecab frame, and adapted to oppose sudden horizontal oscillatory movementsof the former relatively to the latter.

3. In a locomotive, the combination of a .cab frame, a unit frame onwhich said cab frame is supported, and which is fitted to swivelrelatively to said cab frame, two swiveling trucks supporting said unitframe, a plurality of motor driven wheels on which said trucks arecarried, and a frictional resistance mechanism interposed between andcoupled to said trucks and adapted to oppose sudden horizontaloscillatory movements thereof relatively to the unit frame.

4. In a locomotive, the combination of a cab frame, an articulated framecomprising two coupled unit sections on which said cab frame issupported, the unit sections being each fitted to swivel relatively tosaid cab frame, two pairs of swiveling trucks, each pair supporting oneof the unit sections, a plurality of pairs of motor driven wheels onwhich said trucks are carried, and frictional resistance mechanisms,each interposed be tween and coupled to one of the unit frame sectionsand the cab frame and adapted to oppose sudden horizontal oscillatorymovements of the former relatively to the latter.

5'. In a locomotive, the combination of a cab frame, an articulatedframe comprising two coupled unit sections on which said cab frame issupported, the unit sections being each fitted to swivel relatively tosaid cab frame, two pairs of swiveling trucks, each pair supporting oneof the unit sections, a plurality of pairs of motor driven wheels onwhich said trucks are carried, and frictional resistance mechanisms,each interposed between and coupled to the members of each 1,084,317 r ya gait of trucks and adapted to oppose sudden said extension, africtional resistance memorizontal oscillatory movements thereof berconnected to the other truck frame memrelatively to the articulatedframe. her, and means for applying pressure to said 6. In a locomotive,the combination of a frictlonal resistance members in opposition 5 unitframe, two truck frame members to sudden horizontal oscillatorymovements adapted to su port the unit frame and of the frame members.coupled with t e capacity of relative hori- WILLIAM DALTON. zontallyswiveling movement, an extension Witnesses: fixed to one of sand truckframe members, a E. I. SCHAUBER, 10 frictional resistance memberconnected to WILL. W. 'HAMBLY.

copies of this potent us, be obtained for five cents each, by addressingthe Gommissioner of intents,

Washington, D. 0. O

